Error with Simscape simulating the Power System

I'm testing my grid for the thesis which i need to be done, so here is the error which i get when I start my simulation:

"Initial states of switches specified in your circuit produce 1 topological error(s) at t=0 Check the 1 circuit equations listed below: Equations for state variables dependending directly on sources: +Il_transfo_1_Lm: TE-TO_T2 -176.271*Il_transfo_1_winding_2: TE-TO_T2 +Il_transfo_2_Lm: TE-TO_T2 -176.271*Il_transfo_2_winding_2: TE-TO_T2 +170.475*Il_transfo_3_Lm: TE-TO_T2 -169.475*Il_transfo_3_winding_1: TE-TO_T2 -30049.8*Il_transfo_3_winding_2: TE-TO_T2 +2.65497e-24*U_A: TE-TO_G2 +3.02552e-07*U_B: TE-TO_G2 -3.02552e-07*U_C: TE-TO_G2 = 0"

What I am supposed to do and how am supposed to do it. Pls help.

[Joel Van Sickel]

can you share your model?

[明]

How did you solve it?